EARPHONE ACTIVE NOISE CONTROL

摘要

A method of active noise reduction. The method comprises instructing a microphone electronically coupled by a client terminal to record a nonaural noise signal, instructing a circuit of the client terminal to record an aural noise signal using at least one electroacoustic transducer of an earphone, calculating a noise reduction signal based on a function combining nonaural noise signal and the aural noise signal, calculating a noise reduced signal based on a combination of a content signal prepared to be played by the at least one electroacoustic transducer and the noise reduction signal, and instructing the circuit to play the noise reduced signal via the at least one electroacoustic transducer. The nonaural noise signal and the aural noise signal are recorded at least partly simultaneously.

主权项

1. A method of active noise reduction, comprising:
instructing a microphone electronically coupled by a client terminal or an adaptor device to record a nonaural noise signal; instructing a circuit of said client terminal or said adaptor device to record an aural noise signal using at least one electroacoustic transducer of at least one earphone; calculating a noise reduction signal based on a function combining said a nonaural noise signal and said aural noise signal; calculating a noise reduced signal based on a combination of a content signal prepared to be played by said at least one electroacoustic transducer and said noise reduction signal; and instructing said circuit to play said noise reduced signal via said at least one electroacoustic transducer; wherein said nonaural noise signal and said aural noise signal are recorded at least partly simultaneously.